JP3978361B2 - Joints for construction and civil engineering - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a joint for a building / civil engineering structure including a male / female joint member fixed to and fitted to a first member and a second member joined to each other.
[0002]
BACKGROUND OF THE INVENTION
In a steel structure employed in various construction works including a house, so-called high-strength bolt joining is often performed for joining steel frames. In this high-strength bolt joint, first, a cover plate in which a plurality of bolt holes are similarly formed is brought into contact with a steel column or beam in which a plurality of bolt holes are formed at the end. Next, in a state where the contact surfaces of the columns and beams to be joined are abutted with each other, the cover plate and the bolt hole are aligned and the bolts are inserted through them, and nuts are screwed into the bolts. After fine adjustment, tighten the nut.
[0003]
In this high-strength bolt joint, bolt holes are drilled in the steel frame and cover plate, and in an unstable state where the ends of the steel frame are butted together, multiple cover plates and multiple bolt holes are aligned, and bolts are inserted through all of them. In addition, a process is required in which nuts are screwed onto these bolts, the position is finely adjusted, and all nuts are tightened. For this reason, there is a problem that not only the labor for joining the beams and the like is very troublesome but also a long time is required.
[0004]
In order to solve this problem, the present inventor has devised a joint for construction / civil engineering structure having male and female engagement portions at the connection points in the steel structure, and applied for a patent (Japanese Patent Application No. 4-128710). did. 1 and 2 show an example of a joint for construction and civil engineering disclosed in Japanese Patent Application No. 4-127810. FIG. 1 (a) is a plan view of a male joint member, and FIG. FIG. 2C is a side view, FIG. 2A is a plan view of the female joint member, FIG. 2B is a front view thereof, and FIG. 2C is a side view thereof.
[0005]
In FIG. 1, a male joint member 110 includes two ridges 112 extending vertically on one side of a rectangular plate-shaped main body 111. Both ridges 112 are parallel to each other, and are formed in a tapered shape whose width gradually decreases from the top to the bottom.
Near the center of both ridges 112, a key hole 113 having an elliptical cross-sectional shape is formed. The key hole 113 penetrates the male joint member 110 in the thickness direction. In FIG. 2, the female joint member 120 includes two concave grooves 122 extending vertically on one side of a rectangular plate-shaped main body 121. Both the concave grooves 122 are parallel to each other, and are formed in a tapered shape whose width gradually decreases from the upper side to the lower side. The size of both the concave grooves 122 and the inclination of the taper coincide with those of the two convex shapes 112 of the male joint member 110 so that each convex shape 112 accurately engages with each of the concave grooves 22 for engagement. It has become.
Near the center of both concave grooves 122, elliptical key holes 123 whose cross-sectional shapes match the key holes 113 of the male joint member 110 are formed. The key hole 123 penetrates the female joint member 120 in the thickness direction. In these key holes 113 and 123, columnar keys having the same elliptical cross section as the key holes 113 and 123 are inserted and fitted.
[0006]
The conventional male joint member 110 and female joint member 120 having the above-described configuration are used as follows.
FIG. 3 is a perspective view of a main part in a state where the male joint member 120 is inserted into and engaged with the female joint member 110. The male joint member 110 is joined to one end of the H-shaped steel beam 130 by welding. The end surfaces of the upper flange 131, the web 132, and the lower flange 133 of the beam 130 are contacted and joined to the rear surface of the male joint member 110. On the other hand, the female joint member 120 is joined to one end of a short beam 140 of H-shaped steel fixed to the column 150 by welding. On the rear surface of the female joint member 120, the end surfaces of the upper flange 141, the web 142, and the lower flange 143 of the beam 140 are contacted and engaged.
[0007]
The column 150 is composed of a steel square pipe 151, and at the joint portion of the beam 140, the square pipe 151 is cut and welded with a reinforcing plate 152 interposed therebetween. The upper and lower flanges 141 and 143 of the beam 140 are welded to the reinforcing plate 152, and the web 142 is welded to the square pipe 151. The column 150 is erected substantially vertically after the female joint member 120 is welded.
[0008]
Next, from the upper side of the female joint member 120 facing in the vertical direction, the beam 130 to which the male joint member 110 is fixed is lowered while maintaining the horizontal posture, and the two ridges 112 are inserted into the two concave grooves 122, respectively. -Engage.
In this state, since the key hole 113 of the male joint member 110 and the key hole 123 of the female joint member 120 overlap, the key is inserted and fitted into both the key holes 113 and 123. This completes the joining operation of the beams 130 and 140.
[0009]
Japanese Patent Application No. 4-127810 also discloses a joint that uses a bolt and a nut instead of a key or a joint that uses a key and a bolt and a nut together.
[0010]
[Problems to be solved by the invention]
In the joint for architectural / civil engineering structure disclosed in Japanese Patent Application No. 4-127810, a key is inserted / fitted into a key hole or a bolt hole of a male joint member and a female joint member. It is necessary to perform the work of tightening. As apparent from FIG. 3, this operation must be performed in a narrow space between the upper and lower flanges 131 and 132 of the H-shaped steel beam 130, and is not always easy.
When a key is used, precision processing of the key and the key hole is required. When a bolt and a nut are used, an operation of screwing and tightening the nut after the bolt is inserted is necessary.
[0011]
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a joint for construction / civil engineering structure that can easily and surely and quickly join members such as columns and beams at low cost. There is.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, a joint for construction / civil engineering structure according to claim 1 of the present invention is provided with a male and female joint member fixed to the first and second members to be joined to each other and fitted to each other. The male joint member includes a flat plate-like main body having a vertical end surface fixed to a joint portion of the first member, and a dovetail engaging protrusion extending in a vertical direction protruding from the end surface of the main body. A plurality of unit male joints composed of strips are installed in the vertical direction at the joint of the first member, and the unit male joints adjacent in the vertical direction are connected and fixed with a connection plate, and the female joint member is A flat plate-like main body having a vertical end surface fixed to the joint portion of the second member , and an engagement for sliding engagement in the vertical direction with respect to the engaging ridge formed in the vertical direction on the end surface of the main body. A unit female joint comprising a concave groove is connected to the unit male joint. In accordance with the arrangement plurality placed vertically at the junction of the second member, and vertically will be connected and fixed by connection plates between the adjacent unit female coupling, time of fitting the male and female coupling members together The lower unit male joint of the male joint member is fitted between the unit female joints of the female joint member, and the lower unit male joint is positioned on the connecting plate between the unit female joints. The end faces of the main body of the unit female and male joints are in surface contact with each other by slidingly engaging the engaging ridges of the unit male joint and the engaging grooves of each unit female joint .
[0013]
Moreover, the joint for construction / civil engineering structure according to claim 2 of the present invention is the joint for construction / civil engineering structure according to claim 1, wherein the engaging protrusions are formed to project from the side surface of the main body. It is characterized by being.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 4 is a view showing an example of a male joint member of a joint for construction and civil engineering in this embodiment, (a) is a plan view thereof, (b) is a front view, and (c) is a side view. Moreover, FIG. 5 is a figure which shows the female joint member example of the joint for construction and civil engineering structures in this embodiment, (a) is the top view, (b) is a front view, (c) is a side view. Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In this embodiment, an example in which the joint for construction / civil engineering structure of the present invention is applied as a joint for steel structure is shown, but the present invention is not limited to this, and any situation that can be used as a joint for construction / civil engineering structure It can also be applied to.
[0015]
When the joint for building / civil engineering structure of the present embodiment is used at the time of joining columns / beams in the steel structure, the male joint member and the female joint member are installed in combination on the mutual contact end surfaces of the steel frames. The male joint member 10 is fixed to the first member by welding or other fixing means. Male coupling member 10 includes a plate-shaped body 11 having a vertical end surface corresponding to the contact surface between the first member, the dovetail-shaped engaging ridge 12 extending in the vertical direction is protruded from the end surface of the main body 11 A plurality of unit male joints 15 are provided in the first member in the vertical direction.
[0016]
Note that, when installing a plurality of unit male joints 15, the unit joints 15 are connected and fixed by the connection plate 13 in this embodiment. Alternatively, there is no problem even if the connecting plate 13 is originally formed integrally with the main body 11 . Further, the ant-shaped engaging ridge 12 is exemplified by a truncated conical shape having an elliptical cross section, but is not limited thereto, and is fitted with a female joint member with a ridge that is tapered in the vertical direction. Any form may be used as long as a match can be established.
[0017]
On the other hand, the female joint member 20 is fitted with the male joint member 10. The female joint member 20 is fixed to the second member by welding or other appropriate fixing means. The female joint member 20 includes a flat plate-like main body 21 having a vertical end surface corresponding to a contact surface with the second member, and is formed on the end surface of the main body 21 and extends in the vertical direction. A plurality of unit female joints 25 including engaging concave grooves 22 slidably fitted in the direction are installed on the second member in accordance with the arrangement of the unit male joints 15 in the first member. Since the shape of the engaging protrusion 12 of the unit male joint 15 is ant-shaped in the vertical direction, the engaging groove 22 in the unit female joint 25 is narrowed in the vertical direction and has a truncated conical inner space. It will have.
[0018]
As described above with respect to the male joint member 10, when installing a plurality of unit female joints 25, the unit female joints 25 are connected and fixed by the connecting plate 23 in this embodiment. Or, there is no problem even if the connecting plate 23 is originally formed integrally with the main body 21.
[0019]
FIG. 6 is a perspective view of a main part in a state where the male joint member 10 is inserted and engaged with the female joint member 20 of the present embodiment. The first member 140 and the second member 150 including the male and female joint members described above are connected by engaging the engaging ridge 12 and the engaging groove 22. As a procedure, if the first member 130 is joined to the second member 140 protruding from the column 150, for example, the female joint member 10 fixed to the end surface of the first member 130 is provided with the female member 10 provided on the end surface of the second member 140. The joint member 20 is brought close.
[0020]
Then, among the unit male joints 15 a and 15 b in the male joint member 10, the lower unit male joint 15 b is positioned on the connecting plate 23 in the opposing female joint member 20. That is, it fits between the unit female joints 25a and 25b. Thus, the engaging ridges 12 of the unit male joints 15a and 15b are moved to the slide fitting start positions with respect to the engaging concave grooves 22 of the unit female joints 25a and 25b. Subsequently, the first member 130 is moved downward. That is, each engaging ridge 12 is slidably fitted in the engaging groove 22. As a result, the dovetail engaging protrusions 12 are locked in a wedge shape in the engaging grooves 22, and the end faces of the main bodies 11, 21 of the unit female and male joints are in surface contact with each other. As a result, the male and female joint members 10 and 20 are bonded and fixed, and the first member 130 and the second member 140 are securely connected.
[0021]
7A to 7D are explanatory views showing examples of other male joint members. Not only what was shown in the said embodiment but the various male-female joint form as shown, for example in FIG. 7 is also employable. (A) The example which provided the convex protrusion 12 for engagement in two corners of the main body 11 in the male coupling member 10 in a figure, (b) In the figure, the convex protrusion 12 for engagement was provided in all the corners of the main body 11. For example, FIG. (C) shows an example in which the engaging ridges 12 are arranged in a triangular shape on the main body 11, and FIG. (D) shows an example in which the engaging ridges 12 are arranged in an inverted triangular shape on the main body 11. ing. In any case, on the main body 11, a plurality of engaging ridges 12 arranged at least in a vertical relationship are provided. Of course, the engaging groove 22 is also formed in the female joint member in accordance with the arrangement of the engaging ridges 12.
[0022]
In addition, the meaning of “installing a plurality of” male and female unit joint members as described above is to create a single unit joint member in advance and collect and install a plurality of unit joint members. Although it is a joint member, the intention to form a plurality of unit joint members as a result of appropriately cutting out the engaging ridges 12, 23 and the like is included.
[0023]
The engaging ridges 12 may be formed to protrude from the side surface of the main body 11, and the engaging concave grooves 22 may be formed on the main body side surface of the unit female joint 25 in accordance with this.
[0024]
Furthermore, the material of the male joint member 10 and the female joint member 20 is preferably, for example, SS400 (JISG 3101 rolled steel for general structure), SM490A (JIS G 3106 rolled steel for welded structure), but other steel materials or materials other than steel materials Can also be used as appropriate according to the required strength.
[0025]
The engaging ridges 12 of the male joint member 10 may be integrally formed by cutting or casting a plate material, or a bar material may be welded to the plate material. The engaging groove 22 of the female joint member 20 may be formed by cutting or casting a plate material, or by welding a bar or plate material that forms a portion other than the engaging groove 22 to the plate material. May be.
In addition, it is preferable to apply the joint for building / civil engineering structure of the present invention to the column / beam joint illustrated here. However, if it is a place where steel frames are joined, it may be applied to other places (for example, bridges, elevated roads). Can also be applied. Furthermore, the present invention can be applied to architectural structures other than architecture / civil engineering structures, and civil engineering structures such as underground shopping streets and roads.
[0026]
【The invention's effect】
According to the present invention, it is possible to omit the key insertion / fitting or the bolt insertion and the nut screwing / tightening operation into the key hole or bolt hole of the male / female joint member, so that the work efficiency is greatly improved. Can be improved .
In addition, when performing this joining work, it is less likely to be forced to work in a narrow place such as between the flanges of various steel frames (H-shaped steel, etc.), which contributes to ease of work and reduction of work personnel. .
Further, when forming the joint for construction / civil engineering structure of the present invention, no special precision processing is required, so that the manufacturing cost and its efficiency can be improved.
Therefore, it is possible to provide a joint for construction / civil engineering structure that can easily and reliably and quickly join members such as columns and beams at low cost.
[Brief description of the drawings]
FIG. 1 is a plan view of a male joint member, (b) is a front view thereof, and (c) is a front view of an example of a joint for construction / civil engineering structure disclosed in Japanese Patent Application No. 4-127810. It is the side view. FIG.
2A is a plan view of a female joint member, FIG. 2B is a front view thereof, and FIG. 2C is an example of a joint for construction / civil engineering structure disclosed in Japanese Patent Application No. 4-127810. It is the side view.
3 is a perspective view of a main part in a state where the male joint member shown in FIG. 2 is inserted into and engaged with the female joint member shown in FIG. 1. FIG.
FIGS. 4A and 4B are diagrams showing examples of male joint members of the joint for construction and civil engineering structure according to the present embodiment, wherein FIG. 4A is a plan view, FIG. 4B is a front view, and FIG. 4C is a side view.
5A and 5B are views showing an example of a female joint member of a joint for construction / civil engineering structure in this embodiment, where FIG. 5A is a plan view, FIG. 5B is a front view, and FIG. 5C is a side view.
FIG. 6 is a perspective view of a main part in a state where a male joint member is inserted into and engaged with the female joint member of the present embodiment.
FIGS. 7A to 7D are explanatory views showing examples of other male joint members. FIGS.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Male joint member 11 Main body 12 (unit male joint) Engagement protrusion 13 Connection plate 15 Unit male joint 20 Female joint member 21 Main unit 22 (Unit female joint) Main body 22 Engagement groove 23 Connection plate 25 Unit female joint 130 First member 140 Second member

Claims (2)

A joint comprising male and female joint members that are fixed to the first and second members joined to each other and fitted to each other,
The male joint member includes a flat plate-like main body having a vertical end surface fixed to the joint portion of the first member, and an ant-like engagement ridge extending in a vertical direction protruding from the end surface of the main body. A plurality of unit male joints are installed in the vertical direction at the joint of the first member, and the unit male joints adjacent in the vertical direction are connected and fixed with a connection plate,
The female joint member slides in a vertical direction with respect to a flat plate-like main body having a vertical end face fixed to a joint portion of the second member , and the engaging protrusion formed in the end face of the main body in the vertical direction. A plurality of unit female joints comprising engaging concave grooves that can be fitted are installed in the vertical direction at the joint of the second member in accordance with the arrangement of the unit male joints, and between the unit female joints adjacent in the vertical direction. Are connected and fixed with a connecting plate,
When the male and female joint members are fitted to each other, the lower unit male joint of the male joint member is fitted between the unit female joints of the female joint member, and the lower unit male joint is connected between the unit female joints. Positioned on the plate, and in this state, the end faces of the main body of the unit female and male joints are connected to each other by slidingly engaging the engaging ridges of each unit male joint and the engaging concave grooves of each unit female joint. A joint for construction and civil engineering, characterized by surface contact.   The joint for construction / civil engineering structure according to claim 1, wherein the protruding protrusion for engagement is formed to protrude from a side surface of the main body.

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